Antec today presented its newest and most advanced family of power supply units, the Signature Series. Available in 850W and 650W models, the Signature PSUs feature several innovations that distinguish them from the competition. One of them is that they use active DC-to-DC voltage regulation, as opposed to the standard passive magnetic amplifier method, providing for shorter transient response times and greater system stability. In addition, the Signature Series boasts an advanced cooling system with a Pulse Width Modulation (PWM) controlled fan, that ensures quiet and efficiend operation in any condition. Other features of the Signature Series include a dual power circuit board (PCB) layout and a hybrid advanced cable management system that uses modularized cables only for connectors that are of second importance. Main connectors such as the 24-pin ATX one, and the PCI-E power connectors are fixed. The Signature 650 and Signature 850 are available now and will retail for estimated street prices of $249.00 and $299.00, respectively. The PSUs are backed by Antec's Quality 5-Year Warranty for parts and labor.